Page 149 - MODELING OF ASPHALT CONCRETE

Complex Modulus fr om the Indir ect Tension Test 127

Binder Binder
Mixture ID Agg. Source Binder Source Grade Content G
mm
*
† ‡
S 9.5 A -C § Morganton Inman, SC PG 64-22 5.8% 2.615
S9.5A-F Charlotte-Pineville Citgo-Wilmington PG 64-22 6.4% 2.668
S9.5B-C Haw River Citgo-Wilmington PG 64-22 5.9% 2.579
S9.5B-F Morganton Inman, SC PG 64-22 6.3% 2.579
S9.5B-F Charlotte-Pineville Citgo-Wilmington PG 64-22 5.8% 2.689
S9.5C-C Holly Springs Citgo-Wilmington PG 70-22 5.3% 2.486
S9.5C-F Garner Citgo-Wilmington PG 70-22 5.0% 2.456
S12.5B-C Haw River Citgo-Wilmington PG 64-22 5.5% 2.595
S12.5B-F Holly Springs Citgo-Wilmington PG 64-22 5.3% 2.480
S12.5C-C Morganton Inman, SC PG 70-22 4.6% 2.663
S12.5C-F Concord-Cabarrus Citgo-Wilmington PG 70-22 5.0% 2.570
S12.5D-C Concord-Cabarrus Citgo-Wilmington PG 70-22 5.0% 2.582
S12.5D-F Concord-Cabarrus AA-Salisbury PG 76-22 4.7% 2.571
I19.0B-C Haw River Alpaso-Apex PG 64-22 5.0% 2.633
I19.0B-F Garner Citgo-Wilmington PG 64-22 5.4% 2.441
I19.0B-F Charlotte-Pineville Citgo-Wilmington PG 64-22 4.3% 2.773
I19.0C-C Garner Citgo-Wilmington PG 64-22 4.7% 2.472
I19.0C-F Concord-Cabarrus Alpaso-Charlotte PG 64-22 4.8% 2.582
I19.0D-C Charlotte-Pineville Citgo-Wilmington PG 70-22 4.3% 2.770
I19.0D-F Concord-Cabarrus AA-Salisbury PG 70-22 4.1% 2.597
B25.0B-C Holly Springs Citgo-Wilmington PG 64-22 4.5% 2.503
B25.0B-F Garner Citgo-Wilmington PG 64-22 4.2% 2.485
B25.0C-C Haw River Citgo-Wilmington PG 64-22 4.0% 2.678
B25.0C-F Concord-Cabarrus Alpaso-Charlotte PG 64-22 4.4% 2.599

∗ S for surface mix, I for intermediate mix, and B for base mix.
† Nominal maximum aggregate size (NMAS) in mm.
‡ Traffic volume indicator.
§ Aggregate gradation type (C for coarse and F for fine).
Source: Kim et al. 2004, with permission from Transportation Research Board.
TABLE 5-2 Summary of Mixture Characteristics

to the coast of North Carolina were utilized with four different nominal maximum
aggregate sizes (NMASs) (9.5, 12.5, 19.0, and 25.0 mm). Also, binders from six different
sources with performance grades (PG) of 64-22, 70-22, and 76-22 were used in making
these mixtures. Superpave volumetric mix designs were performed on these mixtures
and the resulting optimum asphalt content and the maximum specific gravity (G ) for
mm
each of the mixtures are shown in Table 5-2.